// 启用扩展库的支持
#define _XOPEN_SOURCE 700

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

pthread_mutex_t mut;
pthread_cond_t cond;
pthread_rwlock_t rwlock;

int main()
{
    
    return 0;
}